Invalid CSRF Token. Unable to validate CSRF Token.

[chiragsatapara]

Invalid CSRF Token. Unable to validate CSRF Token.
File: D:\xampp\htdocs\arcade\api\libs\drop\vendor\kunalvarma05\dropbox-php-sdk\src\Dropbox\Authentication\DropboxAuthHelper.php

I checkout the DropboxAuthHelper.php file and found out that $tokenInStore = $this->getPersistentDataStore()->get('state'); this line return a null value. Any change or something you want to suggest for this.

I am following this document : https://github.com/kunalvarma05/dropbox-php-sdk/wiki/Authentication-and-Authorization

[kunalvarma05]

Has the session been started? Make sure you've the session_start(); on top of the script.

See this Example on the same page.

Could you share more information?

[jkbennemann]

Got the same error.
session_start() exists on top of the script.